Sew reusable solid colour face masks with the Poplin Tecnosani 50 Color 100% cotton fabric. In addition to being water resistant, this waterproof fabric is treated with antibacterial Biocide and has the STANDARD 100 certification from OEKO-TEX. This label assures the customer that the analysis and control of any harmful substances in the yarns and fabrics has been carried out. Learn to sew face masks, hair bands to attach to face masks, gowns, gloves and medical hats with our free tutorials. Recommendations: After 25 washes, the treatments will begin to lose their properties. If the fabrics are washed at a temperature of 60º, which is the recommended temperature to disinfect the face masks correctly, the print may begin to fade and lose the intensity of the colours. Wash with neutral detergent. Do not bleach. Important: iron dry (without steam) at a temperature of 120º/140º for 10 to 15 seconds after each wash.